Add service used to handle strings
Move functionality to StringHandler class.
Add vertical tab as delimiter for ::ucWords()
Extend functionality.

Add functionality to trim strings and remove duplicate characters.
Fix bugs, extend functionality, refactor.

* Fix: Case insensitive check performed if case sensitive check requested.
* Check input parameters for validity.
* Left the needle be an array in ::contains().
* Rename ::diff() to ::getDiff().
* Rename ::lines() to ::asLines().
Extend functionality.

Add functionality to check if a haystack string contains multiple needles.
Fix PHPDoc.
Unify occurrences of LineDelimiter and LineEnding to EOL
Add functionality for replacements
Add functions to String class
Extend functionality
Merge remote-tracking branch 'origin/master' into ft-string
Add PHPDocs
Extend functionality; update PHPDocs

* Make the duplicates parameter in ::stripDuplicates() optional.
Extend functionality

* add functions: shuffle(), random(), substr() and substrCount()
Extend functionality.

* Add method to unify the characters of a string.
Add Fixme
Add Fixme
Fix ::stripDuplicates() and extend capabilities of ::buildCharList()
Merge branch 'ft-string'